Perioperative Stress Management in Outpatient Surgery With L-tyrosine Supplementation (SPOT)

Inclusion Criteria: * Membership of a social security scheme or equivalent * At least 18 years of age * Able to express consent * Indication of unilateral or bilateral inguinal hernia cure * General anaesthesia proposed and retained for inguinal hernia treatment regardless of surgical technique Exclusion Criteria: * Surgical indication for another reason or hernial cure associated with another procedure * Smoking estimated at more than 35 pack-years * History of psychiatric pathology * ASA 3 or 4 according to the American Society of Anesthesiologists classification. As a reminder, an ASA 3 class concerns a patient with a severe but not disabling general disease, and an ASA 4 class concerns a patient with a disabling general disease involving the vital prognosis. * ASA 2 and having at least one of the following pathologies or patients treated with -blockers: insulin-dependent diabetes, high blood pressure, heart rhythm disorder, dysthyroidism, progressive neurological disease, long-term benzodiazepines. * Starch allergy or intolerance